• Up to 140 degrees of travel
• 4.25 inch (108mm) arm
• Dual Ball Bearing Supported Output Shaft
• Water and Dust Tight

The HS-815BB Mega sail arm servo has up to 140 degrees of travel and comes with a Heavy Duty 4.25 inch arm. With its dual ball bearing supported output shaft the HS-815BB will provide years of reliable service in larger sailboat applications